Atomic Theory and Structure

Which of the following is/are conclusions based on Rutherford’s gold foil experiment?

• Atom is mostly empty space

• The nucleus is positively charged

• The atom has a small dense nucleus

• All answers are correct

What is the number of protons that the element in this image contain?

• 14
• 7
• 15
• 18

How many electron shells/levels does this atom have?

• 1
• 2
• 3
• 4

How many protons and neutrons are in an atom of Sulfur-33?

• 2 protons, 16 neutrons

• 16 protons, 17 neutrons

• 16 protons, 31 neutrons

• 15 protons, 16 neutrons

Which scientist listed believed the atom is indivisible?

• Dalton

• Rutherford

• JJ Thompson

• Milikan

How many electrons can fit in the second energy level (orbit) of an atom?

• 18

• 16

• 8

• 2

What sub-atomic particles are located in the nucleus?

• electrons

• electrons and neutrons

• protons and electrons

• protons and neutrons

What is a quanta of light called?

• spark

• quark

• photon

• bulb

The smallest particle into which an element can be divided and still be the same substance

• neutron
• atom
• electron
• proton

How many valence electrons does this element have?

• 12

• 8

• 2

• 10